MESON Chess Problem Database

Problem Display
PID: 168588 (8/1Qpk4/2N5/7B/4K3/8/8/8 w - - 0 1)

Cacace, V

Best Problems, 2002

8/1Qpk4/2N5/7B/4K3/8/8/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3?
      • 1...Kd6
        • 2.Qd5#
      • 1...Kc8
        • 2.Bg4#
      • 1...Kxc6!
    • 1.Qb5?
      • 1...Kd6
        • 2.Qd5#
      • 1...Kc8
        • 2.Bg4#
      • 1...Ke6!
    • 1.Qxc7+?
      • 1...Ke6
        • 2.Qe7#
      • 1...Kxc7!
  • Keys
    • 1.Qb4!
      • 1...Kxc6
        • 2.Be8#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kc8
        • 2.Bg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);N_PINP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
        • K(b);S_FLIGHT::B(B)
      • Refutation
        • K(b);S_FLIGHT,XS(C)
    • Try
      • Q(D);N_PINP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
        • K(b);S_FLIGHT::B(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK,XP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT,XQ(D)
  • Actual
    • Q(D);N_PINP(a)
    • Vars
      • K(b);S_FLIGHT,XS(C)::B(B)
      • K(b);S_FLIGHT::QAR1(D)
      • K(b);S_FLIGHT::B(B)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).